Heatmap representing the full allele-specific expression data set of informative and well-expressed X-linked genes in each single cell, from oocytes to blastocysts, in male and female embryos derived from BC and CB crosses. Strictly maternally expressed genes (allelic ratio ≤0.15) are represented in red and strictly paternally expressed genes (allelic ratio ≥0.85) in blue. Color gradients are used in between and genes have been ordered by genomic position. Genes expressed in one or both crosses have been included to the single cell heatmap. n=173 genes.